.header {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-around;
    font-family: '黑体';
    background-color: transparent;
    margin-top: 0px;
}
.header1 {
    display: flex;
    color: black;
}
.active {
    color: black;
}
.menu-item {
    font-size: 14px;
    margin-left: 30px;
    cursor: pointer;
}
.header2 {
    display: flex;
}
.header3 {
    width: 130px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    border-radius: 10px;
    cursor: pointer;
    color: black;
}
.header4 {
    width: 130px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #FEA501;
    border-radius: 10px;
    cursor: pointer;
    color: white;
}
